Your firm Invested $2,509,200 in 270-day commercial paper today. At the end of the investment period (in 270 days) the firm will receive $2,599,800 a. What is the 270 -day holding period rate of return on the investment? (Round your answer to 2 decimal places.) b. How many 270-day periods are there in one year? (Use 365 days in a year. Round your answer to 4 decimal places.) c. What is the annual percentage rate APR eamed on the investment? (Round your onswer to 2 decimal ploces.) b. How many 270-day periods are there in one year? (Use 365 doys in a year. Round your answer to 4 decimal c. What is the annual percentage rate APR earned on the Investment? (Round your answer to 2 decimol places.) d. What is the effective annual rate (EAR)? (Round your answer to 2 decimal places.)